Table 2.
Plasma ACTH (n = 5 per group) and catecholamine levels (noradrenaline and adrenaline; n = 5 per group) from blood samples collected by decapitation
| C | P | PM | GNT | P_GNT | |
|---|---|---|---|---|---|
| ACTH (pg ml−1) | 227 ± 45 | 1175 ± 223* | 256 ± 76 | 239 ± 48 | 662 ± 81* |
| Noradrenaline (ng ml−1) | 1.2 ± 0.3 | 1.8 ± 0.6 | 1.8 ± 0.3 | 1.9 ± 0.3 | 1.8 ± 0.4 |
| Adrenaline (ng ml−1) | 12.0 ± 3.1 | 11.3 ± 2.1 | 13.8 ± 2.1 | 15.8 ± 2.9 | 13.7 ± 1.8 |
Groups are: control rats (C), rats subjected to thermal stimulus without morphine (P), rats subjected to thermal stimulus with 2 mg kg−1 morphine (PM), sympathectomized rats (GNT) and GNT-treated rats subjected to thermal stimulus (P_GNT).
*
P < 0.01 versus respective control rats.